<template>
  <!-- 主体部分 -->
  <section class="main">
    <!-- 全选反选按钮 -->
    <input v-model="all" id="toggle-all" class="toggle-all" type="checkbox" />
    <label for="toggle-all">Mark all as complete</label>
    <ul class="todo-list">
      <!-- 当任务已完成，可以给 li 加上 completed 类，会让元素加上删除线 -->
      <li  v-for="item in list" :key=item.id  :class="{ completed : item.done}">
        <div class="view">
          <!-- <input   class="toggle" v-model="item.done" type="checkbox"/> -->
          <input 
          @change="$emit('change-status-event',item.id)" 
          
           class="toggle" :checked="item.done" 
           type="checkbox"/>
          <label>{{item.name}}</label>
          <button class="destroy" @click="$emit('delete-event',item.id)"></button>
        </div>
      </li>
    </ul>
  </section>
</template>

<script>
export default {
  props:{
    list:{
      type: Array,
    required: true,
    }
  },
  computed:{
    all:{
      get(){
        // 方法一：return this.list.filter(item=>item.done ===true).length ===this.list.length
        return this.list.every((item)=>item.done===true);
      },
      set(value){
        this.$emit('change-all-event',value)
      }
    }
  }
}
</script>

<style></style>
